Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4388189 | Process for preparation of improved semipermeable composite membranes | Takeyuki Kawaguchi, Hiroyoshi Minematsu, Shigeyoshi Hara | 1983-06-14 |
| 4360434 | Amphoteric ion-permeable composite membrane | Takeyuki Kawaguchi, Hiroyoshi Minematsu, Shigeyoshi Hara, Fumio Ueda | 1982-11-23 |
| 4353802 | Semipermeable composite membrane | Shigeyoshi Hara, Takeyuki Kawaguchi, Noriaki Sasaki, Yutaka Taketani, Hiroyoshi Minematsu | 1982-10-12 |
| 4302336 | Semipermeable composite membrane | Takeyuki Kawaguchi, Yutaka Taketani, Noriaki Sasaki, Hiroyoshi Minematsu, Shigeyoshi Hara | 1981-11-24 |
| 4265745 | Permselective membrane | Takeyuki Kawaguchi, Yutaka Taketani, Tomoyoshi Ono, Koh Mori | 1981-05-05 |
| 4260652 | Preparation of permselective composite membrane | Yutaka Taketani, Takeyuki Kawaguchi, Tomoyoshi Ono, Ko Mori | 1981-04-07 |
| 4242208 | Semipermeable composite membrane and process for preparation thereof | Takeyuki Kawaguchi, Yutaka Taketani, Hiroyoshi Minematsu, Noriaki Sasaki, Shigeyoshi Hara | 1980-12-30 |